1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Sergio039 [100]
3 years ago
15

A complete soil profile includes three layers—

Chemistry
2 answers:
Rama09 [41]3 years ago
3 0
It is topsoil, subsoil, and parent material
pav-90 [236]3 years ago
3 0
Top soil subsoil parent material
You might be interested in
How can you tell if a chemical equation is balanced
k0ka [10]

Answer:

A chemical equation is balanced when the number of each kind of atom is the same on both sides of the reaction.

Explanation:

    The law of conservation of matter (except in nuclear reactions) indicates that atoms can neither be created or destroyed.

    The number of atoms that are in the  reactants must be the same as the number of the atoms that are in the product.

    The number and types of molecules can (and will) change. The atoms that make up the molecules are rearranged but the number and kinds of atoms stay the same.  

3 0
3 years ago
What is the composition, in atom percent, of an alloy that contains a) 45.5 lbm of silver, b) 83.7 lbm of gold, and c) 6.3 lbm o
lyudmila [28]

Answer:

\% atAg=44.6\%\\\% atAu=44.9\%\\\% atCu=10.5\%

Explanation:

Hello,

In this case, for computing the atom percent, one must obtain the number of atoms of silver, gold and copper as shown below:

atomsAg=45.5lbm*\frac{453.59g}{1lbm}*\frac{1molAg}{107.87gAg}*\frac{6.022x10^{23}atomsAg}{1molAg}=1.15x10^{26}atomsAg\\atomsAu=83.7lbm*\frac{453.59g}{1lbm}*\frac{1molAu}{196.97gAu}*\frac{6.022x10^{23}atomsAu}{1molAu}=1.16x10^{26}atomsAu\\atomsCu=6.3lbm*\frac{453.59g}{1lbm}*\frac{1molAg}{63.55gCu}*\frac{6.022x10^{23}atomsCu}{1molCu}=2.71x10^{25}atomsCu

Thus, the atom percent turns out:

\% atAg=\frac{1.15x10^{26}}{1.15x10^{26}+1.16x10^{26}+2.71x10^{25}}*100\% =44.6\%\\\% atAu=\frac{1.16x10^{26}}{1.15x10^{26}+1.16x10^{26}+2.71x10^{25}}*100\% =44.9\%\\\% atCu=\frac{2.71x10^{25}}{1.15x10^{26}+1.16x10^{26}+2.71x10^{25}}*100\% =10.5\%

Best regards.

4 0
3 years ago
Please tell if my answer is right or wrong.
xxTIMURxx [149]
Change the places of 'acts against the motion of an object' and 'causes an object to change speed or direction'
5 0
3 years ago
A energia térmica corresponde à soma das energias cinéticas associadas a todas as partículas que compõem um corpo. Essa afirmati
Snezhnost [94]

answer

( )Errada is the answer

explanation

8 0
3 years ago
Which of the following contribute(s) to most of the mass of an atom?
xenn [34]

Answer:

1.

B) protons and newtrons

2.

D)

3.

C)

4.

A)

6 0
3 years ago
Other questions:
  • How does vegetation slow and prevent sediment loss?
    8·1 answer
  • I NEED HELP FAST!!!!! Can you tell me about examples of elements compounds and mixtures??? I have a DBA in a few minutes and I d
    5·1 answer
  • The complete combustion (reaction with oxygen) of liquid octane (C8H18) a component typical of the hydrocarbons in gasoline, pro
    10·1 answer
  • Can someone help me with the question in the image? if it is correct i will mark as brainliest
    5·1 answer
  • Two scientists work together on an experiment, but they have different hypotheses. When the scientists look at the experimental
    13·2 answers
  • Assuming that there is a constant partial pressure for oxygen, according to Le Châtelier’s Principle which of the following occu
    10·1 answer
  • Which sentence most accurately describes electrically charged objects?
    8·2 answers
  • Substances have a fixed arrangement of atoms. true or false (NO LINKS PLEASE)
    5·1 answer
  • The photos below show four pairs of objects.
    7·1 answer
  • What is the acceleration of the ball if it has a mass of 1.5 kg and had a force of 45 N?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!